WO2020042214A1

WO2020042214A1 - Gel injection jig for battery, adhesive injection device, and operation method for same

Info

Publication number: WO2020042214A1
Application number: PCT/CN2018/104598
Authority: WO
Inventors: 梁朝轩
Original assignee: 珠海市古鑫电子科技有限公司
Priority date: 2018-08-30
Filing date: 2018-09-07
Publication date: 2020-03-05
Also published as: CN108889557B; CN108889557A

Abstract

The present invention relates to the technical field of battery manufacturing, and provides a gel injection jig for a battery, a gel injection device, and an operation method for the same. The gel injection jig for a battery injects an explosion-proof gel into space around electrical components within a battery housing. An accommodating space is formed within the battery housing, and the electrical components are located within the accommodating space. The gel injection jig for a battery comprises an air expelling member and a gel injection assembly, a battery housing mounting location is disposed between the air expelling member and the gel injection assembly, and the battery housing mounting location is configured for mounting the battery housing. The air expelling member is disposed above the battery housing mounting location, and has an air expelling opening and an air expelling recess in communication with the accommodating space. The expelling recess communicates with the exterior via the air expelling opening. A minimal distance between the air expelling opening and a bottom portion of the air expelling recess is not less than a distance between a top portion of the accommodating space and the bottom portion of the air expelling recess. The gel injection assembly is disposed below the battery housing mounting location, can communicate with the accommodating space, and is capable of injecting an explosion-proof gel into the accommodating space.

Description

Battery glue injection jig, glue injection device and working method thereof

[0001] The present invention relates to the technical field of battery production, and in particular, to a battery glue injection jig for injecting explosion-proof glue into a battery, a glue injection device having the battery glue injection jig, and work of the glue injection device method. Background technique

[0002] At present, in some special fields of use, such as outdoor sports, adventure, camping, etc., because of their relatively complicated and dangerous use environment, ordinary electronic communication products cannot provide long battery life, and the defects of product design itself It can not adapt to the outdoor environment and can not meet the needs of users. Therefore, outdoor electronic products that not only have a large-capacity battery can provide longer battery life, but also have functions such as explosion protection that can obtain greater safety in use, will increasingly be favored by the majority of outdoor sports enthusiasts.

[0003] Taking explosion-proof electronic products as an example, in addition to the product body itself needs to be designed for explosion-proof, the explosion-proof of the battery is particularly important. Taking into account the product development trend and market demand, large-capacity explosion-proof batteries have become a necessary product configuration because they can provide longer battery life.

[0004] 5 See some battery injection devices with explosion-proof glue injected into the battery. Due to the irrational structural design, bubbles are easily formed when the explosion-proof glue is injected into the battery, which affects the performance of the explosion-proof battery, so it is dangerous during use. Higher.

Summary of invention

technical problem

[0005] The main object of the present invention is to provide a battery glue injection jig with a simple structure, uniform glue injection and no bubble formation.

[0006] Another object of the present invention is to provide a glue injection device having the above-mentioned battery glue injection jig.

[0007] Another object of the present invention is to provide a working method of the above-mentioned glue injection device.

[0008] Technical Solution

[0009] In order to achieve the above-mentioned main objective, the present invention provides a battery glue injection jig for filling explosion-proof glue into a space other than electrical components inside a battery case. An accommodation space is formed inside the battery case. Located in the accommodation space. Battery glue injection fixture includes exhaust parts and glue injection components. There is a battery case mounting position, and the battery case mounting position is used to install the battery case. The exhaust member is disposed above the installation position of the battery casing. The exhaust member has an exhaust port and an exhaust slot that can communicate with the accommodation space. The exhaust slot communicates with the outside through the exhaust port, and the exhaust port and the exhaust slot The minimum distance between the bottoms is not less than the distance between the top of the accommodation space and the bottom of the exhaust slot. The glue injection component is arranged below the installation position of the battery casing. The glue injection component can communicate with the accommodating space and is used to inject explosion-proof glue into the accommodating space.

[0010] A preferred solution is that the glue injection assembly includes a fixing member and a rubber injection plug, and the rubber injection plug is fixed on the battery housing installation position through the fixing component, and the fixing component is detachably and fixedly connected to the battery housing installation position. The rubber plug can communicate with the accommodation space.

[0011] A further solution is that the battery housing installation position has a glue injection component installation slot, the fixing component is installed in the glue injection component installation slot, and two side walls of the glue injection component installation slot are provided on the vertical side. The card slot extends in a straight direction, the card slot extends to the bottom of the battery housing installation position, and the two sides of the fixing member are provided with limit positions at positions corresponding to the card slots, and each limit part is snapped in the corresponding position. Card slot.

[0012] A further solution is that the rubber injection plug extends in a direction parallel to the thickness of the battery housing installation position, the rubber injection plug includes a rubber injection plug body and a limiting boss, and the limiting boss is disposed on the rubber injection plug body Near the end of the battery housing installation position, the limit protrusion extends outward from the peripheral wall of the injection plug, and the limit protrusion is located between the fixing member and the battery housing installation position and is clamped between the two limit portions. The fixing member is provided with a through hole, and the main body of the injection plug passes through the through hole, and the end of the main body of the injection plug far from the mounting position of the battery case protrudes out of the fixing member.

[0013] A further solution is that the rubber injection stopper further includes an abutment stand disposed on a side of the stopper boss away from the main body of the rubber stopper, the abutment stand is a conical stand, and the outer diameter of the abutment stand is close to the stopper protrusion. The end of the stage gradually decreases from the end away from the limiting boss, and the abutment stage abuts on the bottom of the installation slot of the injection module.

[0014] A preferred solution is that a plastic injection channel is provided inside the plastic injection plug, which communicates with the accommodating space, and the radius of the plastic injection channel gradually increases from the middle of the plastic injection plug to the end of the plastic injection plug far from the installation position of the battery case. Increase.

[0015] A preferred solution is that the exhaust member is located on one side of the battery housing mounting position, and the first side wall of the exhaust member is provided from the first sidewall along a thickness direction parallel to the battery housing mounting position. An extension portion extending outward is provided with a fixing card slot on the extension portion, and the fixing card slot is used to fix the exhaust member on the battery housing installation position. A first communication port is opened on the first side wall of the exhaust member near the installation position of the battery casing, and the exhaust groove is communicated with the accommodation space through the first communication port.

[0016] A further solution is that a sealing member is provided between the first side wall of the exhaust member and the mounting position of the battery case, Gui inch pieces are located at the first communication opening.

[0017] A preferred solution is that the injection plug is made of a silicone material.

[0018] In order to achieve the above another object, the present invention provides a glue injection device, including a glue injection machine and the above-mentioned battery glue injection jig. The glue injection machine includes a glue injection needle, and the glue injection needle is inserted into a glue injection component and used to Fill the storage space with explosion-proof glue.

[0019] In order to achieve the above-mentioned another object, the present invention provides a working method of the above-mentioned glue injection device. The working method of the glue injection device includes the following steps: inserting a glue injection needle into the glue injection component; the glue injection machine passes the glue injection component The explosion-proof glue is injected into the accommodating space, and the exhaust member exhausts the air outward. After the accommodating space is filled with the explosion-proof glue, the explosion-proof glue enters the exhaust member until the liquid level of the explosion-proof glue in the exhaust member is not lower than the accommodating space. Stop filling at the top of the space.

[0020] A preferred solution is that, after the injection is completed, the explosion-proof adhesive placed in the battery case in a temperature range of 22 ° C to 26 ° C in the battery case is cured.

[0021] A preferred solution is that the injection speed of the injection needle is in a range of 0.15 g / sec to 0.2 g / sec.

[0022] A further solution is that the injection speed of the injection needle is 0.15 g / sec.

Problem solution

The beneficial effects of the invention

Beneficial effect

[0023] Due to the arrangement of the exhaust groove connected to the accommodating space, after the explosion-proof plastic enters the accommodating space from the injection assembly, the air in the accommodating space is discharged from the exhaust groove and discharged from the exhaust port to the outside, Make the explosion-proof glue smoothly enter the accommodating space. In addition, the minimum distance between the exhaust port and the bottom of the exhaust groove is not less than the distance between the top of the accommodation space and the bottom of the exhaust groove. After the accommodation space is filled with explosion-proof rubber, the explosion-proof rubber enters the exhaust part. Stop the injection until the liquid level of the explosion-proof glue in the exhaust part is not lower than the top of the accommodating space. In this way, due to the principle of the connector, it can be ensured that the accommodating space is completely filled with explosion-proof glue, thereby ensuring good battery performance.

[0024] In addition, the fixing member can be inserted into the glue injection assembly from the bottom of the battery case along the extending direction of the card slot, which is convenient and quick to assemble, and at the same time, the limiting portion is clamped in the card slot, which can prevent the fixing member from being removed from the battery case. Shedding

[0025] In addition, the positioning protrusion can prevent the injection plug from falling off the fixing member. [0026] In addition, the glue injection component installation groove on the battery case is located on the glue injection component installation slot, and the abutment stand abuts on the bottom wall of the glue injection component installation groove, thereby ensuring the installation of the abutment stand and the glue injection component. The tight contact between the grooves prevents the explosion-proof adhesive from overflowing between the abutment table and the installation slot of the injection module.

[0027] In addition, the end of the glue injection channel remote from the installation position of the battery casing is provided in a trumpet shape, which is convenient for the glue injection needle of the glue injection machine to be inserted into the glue plug.

[0028] Also, it is convenient to fix the exhaust member on the battery housing mounting position. In addition, the exhaust member is located at one side of the installation position of the battery casing. After the accommodating space is filled with explosion-proof glue, the explosion-proof glue enters the exhaust member, and the first communication port of the exhaust member is provided on the first side wall of the exhaust member. In this way, the explosion-proof adhesive can be prevented from overflowing from the connection between the first communication port and the second communication port.

[0029] At the same time, the injection speed in the range of 0.15 g / sec to 0.2 g / sec can ensure that the explosion-proof adhesive injected into the accommodating space has no air bubbles, and can also improve the injection efficiency, thereby improving productivity.

Brief description of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 is a structural view of a first perspective of an embodiment of a battery injection jig according to the present invention.

[0031] FIG. 2 is a structural view of a second perspective of an embodiment of a battery injection jig according to the present invention.

[0032] FIG. 3 is an exploded view of a first perspective structure of an embodiment of a battery injection jig according to the present invention.

[0033] FIG. 4 is an exploded view of a second perspective structure of an embodiment of a battery injection jig according to the present invention.

5 is a cross-sectional view of an embodiment of a battery injection jig according to the present invention.

[0035] FIG. 6 is a partially enlarged view at A in FIG. 5.

[0036] FIG. 7 is an exploded view of a structure of an injection assembly in an embodiment of a battery injection jig according to the present invention.

[0037] The present invention is further described below with reference to the drawings and embodiments.

Invention Examples

Embodiments of the invention

1 to 5, the glue injection device of this embodiment includes a glue injection machine and a battery glue injection jig. The glue injection machine includes a glue injection needle 5, the glue injection needle 5 is inserted into the battery glue injection jig and passes The battery injection jig is filled with explosion-proof glue in a space other than the electrical components 4 inside the battery. The glue injection machine of this embodiment is a two-liquid type liquid discharge control machine, and the glue injection needle 5 is a two-liquid FDV2-SWA-V dispensing_. The battery includes a battery case 1, an electrical component 6, and an explosion-proof adhesive filled in a space other than the electrical component 6 inside the battery casing 1. The battery casing 1 includes a face cover 10 1 and the bottom cover 102, the front cover 101 and the bottom cover 102 together form an accommodation space, and the electrical component 4 is located in the accommodation space

[0039] The battery injection fixture includes an exhaust member 2 and an injection assembly 3, and a battery case mounting position is provided between the exhaust member 2 and the injection assembly 3, and the battery case mounting position is used to install the battery case 1. . The exhaust member 2 is provided above the surface cover 101. The exhaust member 2 has an exhaust port 22 and an exhaust groove 21 communicating with the accommodation space. The exhaust groove 21 communicates with the outside through the exhaust port 22, and the exhaust port 22 The minimum distance dl from the bottom of the exhaust groove 21 is not less than the distance d2 between the top of the accommodation space and the bottom of the exhaust groove 21. The glue injection component 3 is disposed below the bottom cover 102, and the glue injection component 3 communicates with the accommodating space and is used to inject explosion-proof glue into the accommodating space. The upper and lower sides in this embodiment refer to the position where the battery injection jig is in the working state, and the exhaust port 22 is set upward when it is working.

[0040] The glue injection assembly 3 includes a fixing member 31 and a glue injection plug 32. Preferably, the glue injection plug 32 is made of a silicone material. The rubber injection plug 32 is fixed on the battery case 1 through a fixing member 31, and the fixing member 31 is detachably and fixedly connected to the battery case 1. The rubber injection plug 32 is in communication with the accommodation space.

[0041] Referring to FIG. 4 to FIG. 7, the battery case 1 is provided with a glue injection component installation slot 11, the battery housing installation position has a glue injection component installation slot, and the glue injection component installation slot 11 is located at the glue injection component installation slot The fixing member 31 is installed in the glue injection module installation groove 11, and both side walls of the glue injection module installation groove 11 are provided with a clamping groove 12 extending in the vertical direction, and the clamping groove 12 extends to the battery housing 1. At the bottom, both sides of the fixing member 31 are provided with limiting portions 311 at positions corresponding to the card slots 12, and each limiting portion 311 is locked in the corresponding card slot 12, and each limiting portion 311 is connected by The portion 313 is connected to the side wall 310 of the fixing member 31 on the side of the battery case 1, and one limiting portion 311 and one connecting portion 313 are arranged in an L shape as a whole.

[0042] The exhaust member 2 is located on one side of the battery case 1, and the first side wall 20 of the exhaust member 2 is provided with an outwardly extending from the first side wall 20 along a direction parallel to the thickness of the battery case 1. The extension portion 23 is provided with a fixing card slot 231. The top wall of the battery case 1 is provided with a fixing protrusion 13, and the fixing protrusion 13 extends into the fixing card slot 231 to fix the exhaust member 2 to the battery case. Body 1. The first side wall 20 of the exhaust member 2 is adjacent to the side wall of the battery case 1. The first side wall 20 of the exhaust member 2 is provided with a protrusion 24 extending outward from the first side wall. A first communication port 201 is formed through the boss 24 and the first side wall 20, and a second communication port 14 is provided on the battery case 1 at a position corresponding to the first communication port 201. A communication port 201 communicates, so that the exhaust groove 21 communicates with the accommodation space. In this embodiment, the number of the first communication port 201 and the second communication port 14 are two. In actual applications, the number of the first communication port 201 and the second communication port 14 can be as required. Make changes. A sealing member 25 is provided at the first communication port 201 between the first side wall 20 of the exhaust member 2 and the side wall of the battery case 1. Preferably, the sealing member is a double-sided adhesive.

[0043] The rubber injection plug 32 extends in a direction parallel to the thickness of the battery case 1. The rubber injection plug 32 includes a rubber injection plug main body 321, a limiting boss 322, and an abutment provided in order along the axial direction of the rubber injection plug 32. The connecting platform 323, the limiting boss 322 is disposed at an end of the injection plug body 321 near the battery case 1, the limiting boss 322 extends outward from the peripheral wall of the injection plug 32, and the limiting boss 322 is located on the fixing member 31 and The battery case 1 is clamped between the two limiting portions 311. The fixing member 31 is provided with a through hole 312. The injection plug body 321 passes through the through hole 312, and the injection plug body 32 1 is away from the battery case. One end of 1 protrudes out of the fixing member 31.

[0044] The abutment table 323 is provided on the side of the limit projection 322 away from the injection plug main body 321. The abutment table 323 is a tapered table. The outer diameter of the abutment table 323 is from the end near the limit projection 322 to a distance from the limit. One end of the convex boss 322 gradually decreases, and the abutting stand 323 abuts on the bottom wall of the injection module installation groove 11.

[0045] Referring to FIG. 6, a rubber injection channel 324 communicating with the accommodating space is provided inside the rubber injection plug 32, and the rubber injection channel 324 is flared at an end away from the battery case 1, that is, from the middle of the rubber injection plug 32 to the injection The end of the rubber plug 32 is far from the battery case 1, and the radius of the injection channel 324 gradually increases. The injection channel 324 provided in a trumpet shape facilitates the insertion of the injection needle 5 into the injection plug 32, and at the same time realizes the close cooperation between the injection needle and the injection channel 324, and prevents the explosion-proof glue from flowing back and overflowing in the injection channel 324.

[0046] The working method of the glue injection device includes the following steps: First, insert the glue injection needle 5 into the glue injection component 3. Next, press the pneumatic valve of the glue injection machine, the injection needle 5 injects explosion-proof glue into the accommodation space through the injection assembly 3, and as the explosion-proof glue gradually enters the accommodation space, the air in the accommodation space continuously enters the exhaust. Into the tank 21 and discharged into the atmosphere from the exhaust port 22. Then, after the accommodating space is filled with explosion-proof glue, the explosion-proof glue enters the exhaust groove 21 of the exhaust member 2 until the liquid level of the explosion-proof glue in the exhaust groove 21 is not lower than the top of the accommodating space. After the injection is completed, place the battery in an environment with a room temperature of 22 ° C to 26 ° C for 12 hours and wait for the explosion-proof adhesive to cure, and the battery is still in an upright state when placed.

[0047] The injection speed of the injection needle 5 is in the range of 0.15 g / second to 0.2 g / second, the time for each injection is 13.8 seconds, and the number of injections is 13 times. Preferably, the injection speed is 0.15 g / sec. The injection speed control within this range can ensure that the explosion-proof glue injected into the accommodating space has no air bubbles, and can also improve the injection efficiency, thereby improving productivity.

[0048] It can be seen from the above that, due to the arrangement of the exhaust grooves communicating with the accommodating space, the explosion-proof rubber enters from the injection assembly. After the accommodating space, the air in the accommodating space is exhausted from the exhaust groove and exhausted from the exhaust port to the outside, so that the explosion-proof adhesive smoothly enters the accommodating space. In addition, the minimum distance between the exhaust port and the bottom of the exhaust groove is not less than the distance between the top of the accommodation space and the bottom of the exhaust groove. After the accommodation space is filled with explosion-proof rubber, the explosion-proof rubber enters the exhaust part. Stop the injection until the liquid level of the explosion-proof glue in the exhaust part is not lower than the top of the accommodating space. In this way, due to the principle of the connector, it can be ensured that the accommodating space is completely filled with explosion-proof glue, thereby ensuring good battery performance.

Industrial applicability

[0049] The battery glue-injection fixture of the present invention allows an explosion-proof glue to enter the containing space smoothly by providing an exhaust groove communicating with the containing space of the battery case. In addition, after the containing space is filled with explosion-proof glue, Explosion-proof glue enters the exhaust piece, and stop the injection until the liquid level of the explosion-proof glue in the exhaust piece is not lower than the top of the accommodation space. In this way, due to the principle of the connector, the accommodation space can be completely filled with explosion-proof glue. Thus, the battery has good sexual fertility B and has good industrial applicability.

[0050] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, or improvement made within the spirit and principle shall be included in the protection scope of the present invention.

Claims

Claim

[Claim 1] A battery injection jig for filling explosion-proof glue into a space other than electrical components inside a battery case, and an accommodation space is formed inside the battery case, and the electrical component is located in the accommodation In space

It is characterized by:

The battery glue injection jig includes an exhaust piece and a glue injection component, and a battery case installation position is provided between the exhaust piece and the glue injection component, and the battery case installation position is used to install the battery case. ;

The exhaust member is disposed above the installation position of the battery casing, the exhaust member has an exhaust port and an exhaust groove that can communicate with the accommodation space, and the exhaust groove passes the exhaust The mouth is in communication with the outside, and the minimum distance between the exhaust port and the bottom of the exhaust groove is not less than the distance between the top of the accommodation space and the bottom of the exhaust groove; Below the battery housing installation position, the glue injection component can communicate with the accommodating space and is used to inject explosion-proof glue into the accommodating space.

[Claim 2] The battery glue injection jig according to claim 1, characterized in that:

The glue injection assembly includes a fixing member and a glue injection plug, the glue injection plug is fixed on the battery case through the fixing member, the fixing member is detachably fixedly connected to the battery case, and The rubber injection plug may communicate with the accommodation space.

[Claim 3] The battery injection jig according to claim 2, characterized in that:

The battery housing installation position has a glue injection component installation slot, the fixing component is installed in the glue injection component installation slot, and both side walls of the glue injection component installation slot are provided in vertical positions. A card slot extending in a direction, the card slot extending to the bottom of the installation position of the battery case, and a limiting portion is provided at a position corresponding to the card slot on both sides of the fixing member, each of The limiting portion is latched in the corresponding slot.

[Claim 4] The battery injection jig according to claim 3, wherein:

The plastic injection plug extends in a direction parallel to the thickness of the installation position of the battery case, the plastic injection plug includes a plastic injection plug body and a limiting boss, and the limiting boss is disposed on the plastic filling plug. One end of the main body is near the mounting position of the battery case, and the position-limiting projection extends from the periphery of the injection plug. The wall extends outward, the limiting boss is located between the fixing member and the battery housing mounting position and is clamped between the two limiting portions, and the fixing member is provided with a through hole, The main body of the plastic injection plug passes through the through hole, and an end of the main body of the plastic injection plug far from the mounting position of the battery case protrudes out of the fixing member.

[Claim 5] The battery injection jig according to claim 4, characterized in that:

The rubber injection plug further includes an abutment table disposed on a side of the limiting protrusion away from the main body of the rubber injection plug, the abutment table is a tapered table, and an outer diameter of the abutment table is close to the abutment table. An end of the limiting boss gradually decreases from an end far from the limiting boss, and the abutting stand abuts on the bottom of the installation slot of the injection assembly.

[Claim 6] The battery injection jig according to any one of claims 2 to 5, characterized in that:

The inside of the plastic injection plug is provided with a plastic injection channel which can communicate with the accommodating space. From the middle of the plastic injection plug to an end of the plastic injection plug far from the battery housing installation position, the plastic injection plug The radius of the channel gradually increases.

[Claim 7] The battery injection jig according to any one of claims 1 to 6, wherein:

The exhaust member is located at one side of the installation position of the battery case, and a first side wall of the exhaust member is provided from the first side along a thickness direction parallel to the installation position of the battery case. An extension portion extending outwards from the wall, the extension portion is provided with a fixing card slot, and the fixing card slot is used for fixing the exhaust member on the battery case;

A first communication port is opened on the first side wall of the exhaust member near the installation position of the battery case, and the exhaust groove is communicated with the accommodation space through the first communication port.

[Claim 8] The battery injection jig according to claim 7, characterized in that:

A seal is disposed between the first side wall of the exhaust member and the battery housing mounting position, and the seal is located at the first communication port.

[Claim 9] The battery injection jig according to any one of claims 1 to 8, characterized in that:

The rubber injection plug is made of a silicone material.

[Claim 10] The glue injection device includes a glue injection machine and the battery glue injection jig according to any one of claims 1 to 9, wherein the glue injection machine includes a glue injection needle, and the glue injection needle is inserted into the glue injection device. The glue assembly is used to inject explosion-proof glue into the accommodating space.

[Claim 11] The working method of the glue injection device is the glue injection device according to claim 10, and the working method of the glue injection device includes the following steps:

Inserting a glue injection needle into the glue injection component;

The glue injection machine injects explosion-proof glue into the accommodating space through the glue injection component, and the exhaust member exhausts air outward;

After the accommodating space is filled with explosion-proof plastic, the explosion-proof plastic enters the exhaust member until the liquid level of the explosion-proof rubber in the exhaust member is not lower than the top of the accommodating space.

[Claim 12] The working method of the glue injection device according to claim 11, characterized in that:

After the injection is completed, place the battery in an environment with a temperature in the range of 22 ° C to 26 ° C and place the explosion-proof glue in the battery case to cure.

[Claim 13] The working method of the glue injection device according to claim 11 or 12, characterized in that: the glue injection speed of the glue injection needle is in a range of 0.15 g / sec to 0.2 g / sec.

[Claim 14] The working method of the glue injection device according to claim 13, characterized in that:

The injection speed of the injection needle is 0.15 g / sec.